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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "huffman.hpp"
#include "util.h"
int main(int argc, char *argv[])
{
FILE *fp;
char str[8];
unsigned char *buf, *dbuf;
int len;
if (argc != 3) {
fprintf(stderr, "usage: %s <compressed.rif> <outfile>\n", argv[0]);
exit(EXIT_FAILURE);
}
fp = fopen(argv[1], "rb");
if (fp == NULL) {
perror("fopen");
exit(EXIT_FAILURE);
}
fread(str, 1, 8, fp);
if (strncmp(str, COMPRESSED_RIF_IDENTIFIER, 8) != 0) {
fprintf(stderr, "%s: invalid compressed rif file\n", argv[1]);
exit(EXIT_FAILURE);
}
len = fsize(argv[1]);
buf = (unsigned char *)malloc(len);
if (buf == NULL) {
fprintf(stderr, "could not allocate %d bytes to load %s\n", len, argv[1]);
exit(EXIT_FAILURE);
}
fseek(fp, 0, SEEK_SET);
fread(buf, 1, len, fp);
fclose(fp);
len = ((HuffmanPackage *)buf)->UncompressedDataSize;
dbuf = (unsigned char *)HuffmanDecompress((HuffmanPackage *)buf);
if (dbuf == NULL) {
fprintf(stderr, "Something went wrong with HuffmanDecompress\n");
exit(EXIT_FAILURE);
}
free(buf);
fp = fopen(argv[2], "wb");
if (fp == NULL) {
perror("fopen");
exit(EXIT_FAILURE);
}
fwrite(dbuf, 1, len, fp);
fclose(fp);
free(dbuf);
return 0;
}
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